Patent Number: 6,305,515

Title: Hydraulically actuated power takeoff clutch assembly

Abstract: A hydraulically actuated power takeoff clutch assembly is rigidly coupled to the flywheel of an engine and has an input hub which serves as a gear to drive auxiliary hydraulic pumps. The input hub is a portion of a wet clutch which is hydraulically actuated through a rotary union connected to an output shaft. The serviceable parts of the clutch are secured to the output shaft and are separably removable from the hydraulic power takeoff assembly for servicing. The clutch is of a multiple disk type. An electronic controller monitors the input and output speeds of the hydraulic power takeoff device and is effective to "bump" the unit to accomodate high inertia loads and to further monitor the operation of the device, such that the clutch thereof serves as a torque limiter.

Inventors: Heidenreich; David C. (Akron, OH), Herchick; Robert E. (Copley, OH), Guinter; Joseph W. (Bay Village, OH)

Assignee: Power Transmission Technology, Inc.

International Classification: F16D 25/0638 (20060101); F16D 25/06 (20060101); F16D 013/22 ()

Expiration Date: 10/23/2018